For which GSM operators can I top up counters? How can I top-up counters?

You can top up counters to Turkcell, Vodafone and Avea prepaid mobile lines.

Turkcell: You can carry out your transaction after selecting the number of counters among the options of 250, 500 or 1000 counters and entering your phone number . When your top up transaction is complete, an SMS will be sent to your mobile phone. In the case that your transaction cannot be completed or you top up counters to a wrong number, you can call 444 0 535 Turkcell Customer Services to receive assistance.

Vodafone: You can carry out your transaction after selecting at least 100 counters as the number of counters and entering your phone number. When your top up transaction is complete, an SMS will be sent to your mobile phone. In the case that your transaction cannot be completed or you top up counters to a wrong number, you can call 444 0 542 Vodafone Customer Services to receive assistance.

Avea: You can carry out your transaction after selecting the number of counters among the options of 100, 150, 250, 500 or 1000 and 2000 counters and entering your mobile phone number . When your top up transaction is complete, an SMS will be sent to your mobile phone. In the case that your transaction cannot be completed or you top up counters to a wrong number, you can call 444 1 555 to receive assistance.